Shuttle-box for looms.



No. 761,617. PATENTED MAY 31, 1904.

A. 13., A. & G. WALKER. SHUTTLE BOX FOR LOOMS.

APPLICATION I'ILED JAN. 20, 1903.

2 sums-5112M 1.

N0 MODEL.

WITNESSES. v -//vv/v 70/?5. M M .1717. Walker; flWalkerm 1 GWalker;

. l v .flt'tornega.

No. 761,617. I PATENTED MAY 31. 1904.

A. B., A. & G. WALKER.

, SHUTTLE BOX FOR LOOMS.

APPLIGATIDN FILED IAN. 20,1903.

no 110mm. 2 sums-sum 2.

wmvs 5. lNVEA/TORS. WM .flE'.WaZkeT;.fl.Walk6r and 0. Walker,

Y shuttle and termed the screed.

I UNITED STATES Patented May 31, 1904.

PATENT OFFICE.

ALBERT EDWARD WALKER, ART UR WALKER, AND. GEORGE WALKER,

OF oRWooD GREEN, NEAR HALIFAX, ENGLAND.

SHUTTLE-BOX FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent NO. 761,617, dated May 31, 1904.

Application filed January 20, 1903. Serial No..139,'7'78. (N0 model.)

To all whom it may concern.-

Be it known that we, ALBERT ,EDWARD WAL ER, ARTHUR WALKER, and GEORGE WALKER, all subjects of His Majesty the King of Great Britain, residing at Norwood Green, near Halifax, England, have invented a certain new anduseful Improvement in Shuttle- Boxes for Looms, of which the following is a specification.

This invention relates to an improvement in weft-replenishing looms, the part to which the particular improvement is directed being that portion of the shuttle-box overhanging the Among the objects of the screed is that of holding the shuttle in the compartment, and for this purpose it must in its overhang leave a space hetwe'en'it and the front ofthe shuttle-compartment which is less than the width of theshuttle, thus preventing a shuttle passing through the opening at the'top of the box either into or out of it without the removal of the screed. In an ordinary loom this screed is a fixed overhanging ledge.

By the present arrangement of parts the screed is caused to fulfil its ordinary function and is in addition enabled to be moved so as to provide a clear opening at the top of the box for the insertion or ejection sidewardly of a shuttle in an automatic loom.

In the accompanying drawings are shown the construction of apparatus under our invention which We at present prefer to employ.

In the drawings, Figure 1 is a view of the screed portion alone, which may be termed a plan, if it is assumed that the shuttle-box carrying it is in its upper or working portion. Fig. 2 is-a side elevation of Fig. 1. Fig. 3 is a similar view to Fig. 1, but showing the screed attached to the swell and fixed in a partof the shuttle-box. Fig. 4 is a side elevation of Fig. 3. Fig. 5 is a plan, on anenlarged scale, showing the parts applied to a compartment of a box'with a shuttle in the act'of entering the same. Fig. 6 is a similar view to Fig. 5, but with the shuttle in position, the part, however, being on a smaller scale. Fig. 7 is a cross-section of Fig. 6 on line a t with the shuttle removed, and Fig. 8 isa general end view of a shuttle-box and part of a feeding and releasing device of an automatic loom.

According to our invention the screed is made intwo parts f and 5, one part, 4, being fixed and the other part, 5, movable. -The fixed part has an overhanging ledge 18 and is permanently attached on the back 3 of the shuttle-compartmentQ over the entrance, such ledge 18 bearing the chief strain, such as that which comes upon it on the entrance of the shuttle. The movable part is in theform of a lever having an overhanging part with an inclined edge 25 working upon and in conjunction with the shuttle-box swell 6 and is pivoted at its outer or fulcrum end 7 by pin 8 passing through slot 9 to the back of the shuttle-compartment and at its inner end 10 to the swell 6 by pin 12 as near the extreme end of the latter as possible. The fulcrum of the screed is placed'beyond the usual fulcrum 13 of the swell 6 and as far from it as the construction of the shuttle-compartment will permit. at its inner end, which is guided and supported The swell 6 has the usual extension 29' by a lug 28, projecting in front of it and carrear or-outer end 17 of the screed, as shown in Figs. 7 and 8, the incline being so steep atthe rear or outer end that as the screed opens the contact or acting point where the leverage is exerted is kept as far away from the pivotingpoint of the screed as possible to avoid the great increase of force and leverage that would be necessary when the'shuttle came to act only on the outer end 17 The overhanging ledge 18'of the fixed part of the screed 4 is curved from about half its length until at its inner terminal end 19 theledge meets the wall of the shuttle-compartment, the curvature following the curvature of the shuttle for the clear passage of the shut tle into and out of the shuttle-box through the open part when being inserted or removed.

To strengthen the movable parts of the screed against the pressure of the working shuttle, a slot 21 is formed about the widest part of the screed, through which a pin is inserted and screwed into the swell 6, thehead of the pin bearing against the outer face of the screed.

To increase the width of the swell inside the shuttle-compartment so that it may bear on the whole face of the shuttle and guide it in and out of the compartment, it may be provided with aplate 27 on its inner face, as shown in Figs. 4 and 7 extending nearly up to the under side of the overhanging ledge 25.

It will be seen that the pivoting-point 8 0f the screed being placed beyond the pivotingpoint 13 of the swell relative to their line of movement and the line between said pivotingpoints being parallel to the wall of the shuttle-box said line forms the base of a triangle the apex of which is the connecting-point 12 of the screed to the swell, while the inner line is the swell and the outer line the screed.

-By thus pivoting the screed and swell at dif- I the screed by it the swell is moved the minimum amount necessary and the screed is also moved with the least resistance to the incom' ing shuttle and enables the shuttle to fully enter the box without actually coming in contact with the swell. While the raising of the movable part of the screed lifts the swell and removes it from the path of the incoming shuttle, it only displaces the swell, however, sufliciently to allow the shuttle to pass under it, whereas the screed itself is raised and displaced slightly under this distance plus the distance that it overhung the swell at the most protruding part of the swell when the shuttlebox was empty. The movable part 5 of the screed has thus an increased motion at'the point 14: over that of the swell at that point 15 of the swell near its fulcrum which projects farthest into the shuttle-compartment. This increase of movement given to the movable part 5 of the screed constitutes the main feature in the invention, as at the discharge or ejection movement of the empty shuttle the movement-of the swell alone would be too slight and too slow to be of value in withdrawing the part 5 of the screed foreffecting a clear opening of the top of the shuttle-compartment. Thus in the discharge movement a sufficient movement of the swell caused by either of the actions hereinafter described by simultaneously giving an enlarged and quicker movement to the movable part of the screed at the particular part where the screed would otherwise have caused-an obstruction to the free clearance of the opening of the top of the shuttlercompartment removes in a positive manner the obtruding portion of the screed level with or behind the face of the spring-presser 23 or similar device fixed on the front of the automatic feeding apparatus 24. In the ordinary operation of the apparatus, however, the rotary movement of the shuttle-box causes a sudden displacement outwardly of the swell 6, which is a freely-moving heavy part, and this carries with it the movable part 5 of the screed; but should this action not take place fully the presser 23 will effect it from the rear end 22 of the swell, as

stated. This action upon the swell during the discharge, as explained above, while removing the pressure of the swell from the shuttle is imparted to the screed, but with an increased movement of that part of the screed which overhangs the part of the swell which protrudes farthest into the shuttle-compartment. Thus the obstruction of the screed to the clear opening of the top of the shuttlecompartment is entirely withdrawn to leave a clear and uninterrupted opening to permit the shuttle to fall from the shuttle-box.

What we claim is 1. The combination with a shuttle-box, of a screed formed in two parts for overhanging the shuttle-compartment, one of said parts being fixed to the shuttle-box, and the other being pivoted to said box whereby it is movable to disclose and cover the compartment, and an inclined and beveled face carried by said screed to assist the entry of the shuttle.

'2. The combination with a shuttle-box, of a movable pivoted screed for overhanging the shLittle-compartment said screed having an inclined edge and an inclined outer face 16 beveled to an angle increasing in acuteness to the rear or outer end 17 whereby the leverage exerted by an incoming shuttle is kept as far away from the pivoting-point as possible.

3. The combination with a shuttle-box of a swell, and a screed formed in two parts, one

of said parts being iixed to the shuttle-box and the other attached at one point to the swell, and adapted to overhang the shuttleeompartment whereby the movement imparted to either the swell or the movable part of the screed will produce a movement in the other.

4:. The combination with a shuttle-box of a swell pivoted thereto, a screed, means for attaching same at its front end to said swell and means for pivoting it at its rear end to the box.

5. The combination with a shuttle-box of a lIO swell pivoted thereto, a screed also pivoted thereto, and means connecting said screed and swell together, the pivoting-point of the screed being placed beyond the pivoting-point of the swell relative to their line of movement, and

having the line between said pivoting-points parallel to the wall of the shuttle-box, said line forming the base of a triangle, the apex of which is the connecting-point of the screed to the swell and of which the inner line is the swell and the-outer line the screed so that a movement imparted to the screed on the entrance of a shuttle will impart a movement to the swell and remove it from the path of the shuttle and similarly a movement imparted to the swell to relieve its pressure from the shuttle simultaneously eflects an enlarged and quicker movement of the screed and prevents it obstructing the exit of the shuttle.

6. The combination with a shuttle-box of a swell pivoted thereto, a screed, means for attaching same at its front end to said swell,

means for pivoting said screed at its rear end to ALBERT EDWARD WALKER. ARTHUR WALKER. GEORGE WALKER.

Witnesses: v

WM. SEvERToN, DAN Comm. 

